# -*- coding:utf-8 -*-
"""
@file: day02.py 
@time: 2019/06/29
@author: ljt
"""
def f(a,b=2,c='csk'):
	print(c)
	c = a+b
	# print(c)
	return c

if __name__ == '__main__':
	bb=f(1)
	print(bb)